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% isOpen.character.R
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% by the Rdoc compiler part of the R.oo package.
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\name{isOpen.character}
\alias{isOpen.character}
\title{Checks if there is an open connection to a file}
\usage{
\method{isOpen}{character}(pathname, rw=c("read", "write"), ...)
}
\description{
Checks if there is an open connection to a file.
}
\arguments{
\item{pathname}{An \code{\link[base]{character}} \code{\link[base]{vector}}.}
\item{rw}{A \code{\link[base]{character}} \code{\link[base]{vector}}.
If \code{"read"}, a file is considered to be open if there exist an
open connection that can read from that file.
If \code{"write"}, a file is considered to be open if there exist an
open connection that can write to that file.
Both these values may be specified.
}
\item{...}{Not used.}
}
\value{
Returns a \code{\link[base]{logical}} \code{\link[base]{vector}} indicating for each file whether there
exists an open file \code{\link[base:connections]{connection}} or not.
}
\author{Henrik Bengtsson}
\seealso{
See \code{isOpen()} in \code{\link[base]{connections}}.
\code{\link[base]{showConnections}}().
}
\keyword{methods}
\keyword{IO}
\keyword{utilities}
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